Circuit breaker with arc isolating device

Abstract

The utility model discloses a circuit breaker with an arc isolating device, and relates to the technical field of electric appliance devices. The circuit breaker comprises a circuit breaker body, a cavity is formed in the circuit breaker body, an arc extinguishing device is fixedly connected to the left side of the inner wall of the cavity, placing grooves are formed in the front face and the back face of the circuit breaker body, the two placing grooves are symmetrically arranged with the arc extinguishing device as the center, and parts contained in the placing grooves are the same. A connecting block is arranged in the containing groove, sliding grooves are formed in the top and the bottom of the connecting block, and sliding rails are slidably connected to the inner walls of the sliding grooves. According to the utility model, the clamping assembly is arranged, specifically, the clamping block is clamped in the clamping groove in the connecting block to fix the connecting block, and after the flash barrier is installed, the clamping block is not damaged and the next fixing effect is not influenced during disassembly, so that the arc isolating effect of the flash barrier is not influenced, the circuit breaker is protected, waste is reduced, and the service life of the circuit breaker is prolonged. Installation is fast, and efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrical devices, and in particular relates to a circuit breaker with an arc isolation device. Background Art

[0002] The arc extinguishing system is an important component of the circuit breaker. It is used to extinguish the arc generated when the circuit breaker is turned on and off. The arc extinguishing system usually includes an arc extinguishing chamber. The inner walls on both sides of the arc extinguishing chamber are provided by the shell. Since the arc is usually accompanied by high temperature, it is easy to pierce the side wall of the arc extinguishing chamber, that is, the side wall of the shell, causing damage to the circuit breaker, which poses certain safety hazards.

[0003] Existing circuit breakers usually have arc-isolating plates on the inner walls on both sides of the arc-extinguishing chamber. The arc-isolating plates are fixed to the shell. After the circuit breaker has been used for a long time, the arc-isolating plates may need to be replaced due to different materials used. Since the arc-isolating plates are embedded together with the shell, the embedding point may be damaged during the disassembly process, so that the next time the arc-isolating plates are installed, the effect is not good and they are easy to fall off, which in turn affects the arc-isolating effect of the arc-isolating plates and affects the use of the circuit breaker. Utility Model Content

[0004] The utility model aims to provide a circuit breaker with an arc isolation device, by setting a clamping assembly, specifically, by clamping a clamping block in a clamping groove in a connecting block to fix the connecting block. After the arc isolation plate is installed, the clamping block will not be damaged during disassembly, and the effect of the next fixation will not be affected, thereby not affecting the arc isolation effect of the arc isolation plate, thereby protecting the circuit breaker, reducing waste, and installing quickly, improving efficiency, and solving the problem that the existing arc isolation plate may need to be replaced due to different materials used, and the arc isolation plate and the shell are embedded together, so that the disassembly process may damage the embedding point, so that the arc isolation plate will not have a good effect when installed next time and is easy to fall off, thereby affecting the arc isolation effect of the arc isolation plate and affecting the use of the circuit breaker.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model is a circuit breaker with an arc isolation device, comprising a circuit breaker, a cavity is provided inside the circuit breaker, an arc extinguisher is fixedly connected to the left side of the inner wall of the cavity, placement grooves are provided on the front and back of the circuit breaker, the two placement grooves are symmetrically arranged with the arc extinguisher as the center, the parts contained in the placement grooves are the same, a connecting block is provided inside the placement groove, a slide groove is provided on the top and bottom of the connecting block, a slide rail is slidably connected to the inner wall of the slide groove, the top and bottom of the slide rail are fixedly connected to the top and bottom of the inner wall of the placement groove, an arc isolation plate is fixedly connected to the back of the connecting block, the arc isolation plate is made of nickel-based alloy, has good high temperature resistance, can withstand the high temperature generated by the arc, and will not damage the circuit breaker housing;

[0007] The locking plate is provided with a plurality of locking plates, the locking plate having two locking cams, the locking plate having a plurality of locking plates and a plurality of locking plates, and the plurality of locking plates having a plurality of locking plates.

[0008] Furthermore, the outer surface of the limit plate is slidably connected to the inner wall of the sliding hole, and a spring is sleeved on the second outer surface of the sliding rod. The side of the spring close to the connecting block is fixedly connected to the side of the clamping block away from the connecting block. When the connecting block leaves the placement groove through the limit plate, the clamping block will not fly out directly due to the rebound force of the spring, and the limit plate will contact the fixing ring to form a blockage.

[0009] Furthermore, a side of the spring close to the limit plate is fixedly connected to a side of the fixing ring away from the limit plate, and a snap-in groove is provided at the top and bottom of the connecting block, and the inner wall of the snap-in groove contacts the outer surface of the snap-in block. Through the rebound force of the spring, after the connecting block squeezes the snap-in block to move toward the inside of the sliding hole, when the snap-in groove and the snap-in block are aligned, the snap-in block will be rebounded back into the snap-in groove by the rebound force to fix the connecting block.

[0010] Furthermore, the right side of the connecting block is conically set, the side of the clamping block close to the connecting block is conically set, a rotating hole is opened on the front of the connecting block, and a turntable is rotatably connected to the inner wall of the rotating hole. Through the conical setting, when the connecting block and the clamping block are in contact, the two cones can be fitted together to squeeze the clamping block to move it.

[0011] Furthermore, a pushing assembly is arranged inside the two sliding grooves 1, and the two pushing assemblies are symmetrically arranged with the sliding groove 2 as the center. The parts included in the pushing assembly are the same. The pushing assembly includes a sliding rod 1, and the outer surface of the sliding rod 1 is slidingly connected to the inner wall of the sliding groove 2. The inner wall of the sliding groove 1 is slidingly connected to a limiting ring. By setting the pushing assembly, specifically taking a cross screwdriver to drive the turntable to rotate clockwise, the clamping block is disengaged from the clamping groove. The operation is simple and quick when removing the arc isolation plate, and the pushing assembly occupies a small space and will not affect the installation and use of the circuit breaker.

[0012] Furthermore, an arc groove is provided inside the turntable, a cross groove is provided on the front of the turntable, the inner wall of the limit ring is fixedly connected to the outer surface of the sliding rod, the front of the sliding rod is fixedly connected to a fixing rod, and a connecting plate is provided on the front of the fixing rod. Through the cross groove, a cross screwdriver can be used to rotate the turntable, and the sliding distance of the sliding rod is controlled by the limit ring. When the limit ring contacts the inner wall of the sliding groove close to the clamping block, the limit ring cannot move, so that the sliding rod cannot move either.

[0013] The cam is provided with a second pin hole, the second pin hole being provided inside the fixing plate, the fixing plate being rotatably connected with the second inner wall of the second pin hole of the connecting plate through the outer surface of the second pin hole, the inner wall of the arc groove being slidably connected with a rotating rod, the rotating rod being provided with a pin hole, the front face of the connecting plate being fixedly connected with the first pin hole, the connecting plate being rotatably connected with the first inner wall of the first pin hole of the rotating rod through the outer surface of the first fixed pin hole, and the rotating rod sliding in the arc groove when the turntable rotates through the arc groove, so that the first pin hole of the connecting plate rotates in the first pin hole of the rotating rod, and when the connecting plate rotates, the second pin hole of the connecting plate will also rotate on the second surface of the pin shaft of the fixing plate, which will push the sliding rod to slide inside the second sliding groove, so that the turntable can control the movement of the sliding rod, and at the same time, the clamping block inside the clamping groove leaves the inside of the clamping groove, thereby canceling the fixation of the connecting block.

[0014] The utility model has the following beneficial effects:

[0015] 1. The utility model fixes the connecting block by setting a clamping assembly, specifically by clamping the clamping block in the clamping groove in the connecting block. After the arc isolation plate is installed, the clamping block will not be damaged during disassembly, and the effect of the next fixation will not be affected, thereby not affecting the arc isolation effect of the arc isolation plate, thereby protecting the circuit breaker, reducing waste, and quickly installing and improving efficiency.

[0016] 2. The utility model sets a pushing component, specifically, taking a cross screwdriver, driving the turntable to rotate clockwise, so that the clamping block is disengaged from the clamping groove. When removing the arc isolation plate, the operation is simple and fast. The pushing component occupies a small space and will not affect the installation and use of the circuit breaker.

[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the drawings required for describing the embodiment will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the left-side sectional structure of the utility model circuit breaker;

[0021] Figure 3 For this utility model Figure 2 A is a schematic diagram of the enlarged structure of the middle part;

[0022] Figure 4 For this utility model Figure 2 A schematic diagram of the enlarged structure of B;

[0023] Figure 5 It is a schematic diagram of the cross-sectional structure of the utility model circuit breaker viewed from above;

[0024] Figure 6 This is a schematic diagram of the structure of the propulsion component of the utility model;

[0025] Figure 7 The utility model is a schematic diagram of the turntable structure.

[0026] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0027] 1. Circuit breaker; 11. Connecting block; 111. Arc isolation plate; 112. Slide rail; 12. Arc extinguisher; 13. Turntable; 14. Pushing assembly; 141. Sliding rod 1; 142. Limiting ring; 143. Connecting plate; 144.

[0028] Fixed rod; 145, rotating rod; 2, clamping assembly; 21, sliding rod 2; 22, clamping block; 23, spring; 24, limit plate; 25, fixing ring. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-7 As shown, the utility model is a circuit breaker with an arc isolation device, including a circuit breaker 1, a cavity is provided inside the circuit breaker 1, an arc extinguisher 12 is fixedly connected to the left side of the inner wall of the cavity, placement grooves are provided on the front and back of the circuit breaker 1, the two placement grooves are symmetrically arranged with the arc extinguisher 12 as the center, the parts contained in the placement grooves are the same, a connecting block 11 is provided inside the placement groove, a slide groove is provided on the top and bottom of the connecting block 11, a slide rail 112 is slidably connected to the inner wall of the slide groove, the top and bottom of the slide rail 112 are fixedly connected to the top and bottom of the inner wall of the placement groove, and an arc isolation plate 111 is fixedly connected to the back of the connecting block 11;

[0031] Two sliding grooves 1 are provided inside the connecting block 11, and sliding grooves 2 are provided at the bottom of the upper sliding groove 1 and the top of the lower sliding groove 1. Sliding holes are provided at the top and bottom of the inner wall of the placement groove. A clamping assembly 2 is provided inside the two sliding holes. The two clamping assemblies 2 are symmetrically arranged with the connecting block 11 as the center. The parts contained in the clamping assembly 2 are the same. The clamping assembly 2 includes a sliding rod 21. A fixing ring 25 is fixedly connected to the inner wall of the sliding hole. A clamping block 22 is fixedly connected to the side of the sliding rod 21 close to the connecting block 11. The side of the movable rod 21 away from the fixed ring 25 is fixedly connected to the limiting plate 24, and the outer surface of the sliding rod 21 is slidably connected to the inner wall of the fixed ring 25. The connecting block 11 is fixed by setting the clamping assembly 2, specifically by clamping the clamping block 22 in the clamping groove in the connecting block 11. After the arc isolation plate 111 is installed, the clamping block 22 will not be damaged during disassembly, and the effect of the next fixation will not be affected, thereby not affecting the arc isolation effect of the arc isolation plate 111, thereby protecting the circuit breaker 1, reducing waste, speeding up installation, and improving efficiency.

[0032] The outer surface of the limit plate 24 is slidably connected to the inner wall of the sliding hole. The outer surface of the sliding rod 21 is sleeved with a spring 23. The side of the spring 23 close to the connecting block 11 is fixedly connected to the side of the clamping block 22 away from the connecting block 11.

[0033] The side of the spring 23 close to the limit plate 24 is fixedly connected to the side of the fixing ring 25 away from the limit plate 24 . The top and bottom of the connecting block 11 are both provided with a clamping groove, and the inner wall of the clamping groove contacts the outer surface of the clamping block 22 .

[0034] The right side of the connecting block 11 is conical, and the side of the clamping block 22 close to the connecting block 11 is conical. A rotating hole is provided on the front side of the connecting block 11, and a rotating disk 13 is rotatably connected to the inner wall of the rotating hole.

[0035] A pushing assembly 14 is arranged inside the two sliding grooves 1, and the two pushing assemblies 14 are symmetrically arranged with the sliding groove 2 as the center. The parts included in the pushing assembly 14 are the same. The pushing assembly 14 includes a sliding rod 141. The outer surface of the sliding rod 141 is slidably connected to the inner wall of the sliding groove 2, and the inner wall of the sliding groove 1 is slidably connected to a limit ring 142. By setting the pushing assembly 14, specifically taking a cross screwdriver to drive the turntable 13 to rotate clockwise, the clamping block 22 is disengaged from the clamping groove. When removing the arc isolation plate 111, the operation is simple and fast. The pushing assembly 14 occupies a small space and will not affect the installation and use of the circuit breaker.

[0036] An arc groove is provided inside the turntable 13, and a cross groove is provided on the front of the turntable 13. The inner wall of the limit ring 142 is fixedly connected to the outer surface of the sliding rod 141. The front of the sliding rod 141 is fixedly connected to a fixing rod 144, and a connecting plate 143 is provided on the front of the fixing rod 144.

[0037] The front side of the fixing rod 144 is fixedly connected with a second pin shaft, and a second pin hole is opened inside the connecting plate 143. The fixing rod 144 is rotatably connected with the inner wall of the second pin hole of the connecting plate 143 through the outer surface of the second pin shaft.

[0038] A rotating rod 145 is slidably connected to the inner wall of the arc groove, a pin hole 1 is opened inside the rotating rod 145, a pin shaft 1 is fixedly connected to the front of the connecting plate 143, and the connecting plate 143 is rotatably connected to the inner wall of the pin hole 1 of the rotating rod 145 through the outer surface of the fixed pin shaft 1.

[0039] A specific application of this embodiment is:

[0040] When in use, the connecting block 11 is placed in the placement groove and slides on the surface of the slide rail 112, driving the arc isolation plate 111 to move. During the sliding process, the right side of the connecting block 11 will be close to the clamping block 22. Since the right side of the connecting block 11 and the bottom of the clamping block 22 are conical, when the connecting block 11 and the clamping block 22 are in contact, the connecting block 11 will squeeze the clamping block 22 to move inside the sliding hole 2. When the clamping block 22 moves, it will drive the sliding rod 21 to slide on the inner wall of the fixing ring 25, and the limiting plate 24 will slide on the inner wall of the sliding hole. The clamping block 22 will be close to the limiting plate 2 4 squeezes the spring 23. When the connection block 11 drives the arc-isolating plate 111 to move in the placement groove to contact the right side of the placement groove, the arc-isolating plate 111 will block the arc extinguisher 12, thereby blocking the arc generated during the short circuit, so that the arc is not easy to penetrate the housing of the circuit breaker 1, and the circuit breaker housing will not be damaged due to the excessive temperature generated by the arc. When the arc-isolating plate 111 blocks the arc extinguisher 12, the clamping block 22 will be rebounded by the rebound force of the spring 23 and clamped in the clamping groove in the connection block 11 to fix the connection block 11. When the arc-isolating plate 111 needs to be replaced, , take a cross screwdriver, insert it into the cross slot of the turntable 13, and then turn the screwdriver clockwise to drive the turntable 13 to rotate clockwise. When the turntable 13 rotates, the rotating rod 145 will slide in the arc groove, so that the pin shaft 1 of the connecting plate 143 rotates in the pin hole 1 of the rotating rod 145. When the connecting plate 143 rotates, the pin hole 2 of the connecting plate 143 will also rotate on the surface of the pin shaft 2 of the fixing rod 144, changing the angle of the connecting plate 143. When the rotating rod 145 changes its angle, it will push the sliding rod 141 to slide inside the sliding groove 2, bringing The movable limit ring 142 slides inside the sliding groove 1, so that the fixed rod 144 is close to the clamping block 22, and then the clamping block 22 is lifted to make the clamping block 22 away from the clamping groove. When the limit ring 142 slides inside the sliding groove 2 until it contacts the side of the sliding groove 2 close to the clamping block 22, the sliding rod 141 will stop moving, the clamping block 22 will also be disengaged from the clamping groove, and the sliding rod 141 will not enter the sliding hole. Then, the connecting block 11 is pulled to separate the arc isolation plate 111 from the arc extinguisher 12, the arc isolation plate 111 is taken out, and the arc isolation plate 111 is replaced.

[0041] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0042] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A circuit breaker with an arc isolation device, comprising a circuit breaker (1), wherein a cavity is provided inside the circuit breaker (1), an arc extinguisher (12) is fixedly connected to the left side of the inner wall of the cavity, placement grooves are provided on the front and back of the circuit breaker (1), the two placement grooves are symmetrically arranged with the arc extinguisher (12) as the center, the parts contained in the placement grooves are the same, and a connecting block (11) is arranged inside the placement groove, characterized in that: The connection block (11) is provided with a slide groove at the top and bottom, the inner wall of the slide groove is slidably connected to a slide rail (112), the top and bottom of the slide rail (112) are fixedly connected to the top and bottom of the inner wall of the placement groove, and the back of the connection block (11) is fixedly connected to an arc isolation plate (111); The connection block (11) has two sliding grooves 1 formed inside, and the bottom of the sliding groove 1 located above and the top of the sliding groove 1 located below are both provided with sliding grooves 2, and the top and bottom of the inner wall of the placement groove are both provided with sliding holes, and the two sliding holes are provided with snap-fit ​​components (2), and the two snap-fit ​​components (2) are symmetrically arranged with the connection block (11) as the center, and the parts contained in the snap-fit ​​components (2) are the same, and the snap-fit ​​components (2) include sliding rods 2 (21), and the inner wall of the sliding hole is fixedly connected with a fixing ring (25), and the side of the sliding rod 2 (21) close to the connection block (11) is fixedly connected with a snap-fit ​​block (22), and the side of the sliding rod 2 (21) away from the fixing ring (25) is fixedly connected with a limiting plate (24), and the outer surface of the sliding rod 2 (21) is slidably connected to the inner wall of the fixing ring (25).

2. A circuit breaker with an arc isolation device according to claim 1, characterized in that: The outer surface of the limit plate (24) is slidably connected to the inner wall of the sliding hole, and the outer surface of the second sliding rod (21) is sleeved with a spring (23), and the side of the spring (23) close to the connecting block (11) is fixedly connected to the side of the clamping block (22) away from the connecting block (11).

3. A circuit breaker with an arc isolation device according to claim 2, characterized in that: The side of the spring (23) close to the limit plate (24) is fixedly connected to the side of the fixing ring (25) away from the limit plate (24), and the top and bottom of the connecting block (11) are both provided with a clamping groove, and the inner wall of the clamping groove contacts the outer surface of the clamping block (22).

4. A circuit breaker with an arc isolation device according to claim 3, characterized in that: The right side of the connecting block (11) is conical, the side of the clamping block (22) close to the connecting block (11) is conical, the front side of the connecting block (11) is provided with a rotating hole, and the inner wall of the rotating hole is rotatably connected to a rotating disk (13).

5. A circuit breaker with an arc isolation device according to claim 4, characterized in that: A pushing assembly (14) is arranged inside the two sliding grooves 1, and the two pushing assemblies (14) are symmetrically arranged with the sliding groove 2 as the center. The pushing assembly (14) comprises the same parts, and the pushing assembly (14) includes a sliding rod 1 (141). The outer surface of the sliding rod 1 (141) is slidably connected to the inner wall of the sliding groove 2, and the inner wall of the sliding groove 1 is slidably connected to a limiting ring (142).

6. A circuit breaker with an arc isolation device according to claim 5, characterized in that: An arc groove is provided inside the rotating disk (13), a cross groove is provided on the front of the rotating disk (13), the inner wall of the limiting ring (142) is fixedly connected to the outer surface of the sliding rod (141), the front of the sliding rod (141) is fixedly connected to a fixing rod (144), and a connecting plate (143) is provided on the front of the fixing rod (144).

7. A circuit breaker with an arc isolation device according to claim 6, characterized in that: The front side of the fixing rod (144) is fixedly connected with a second pin shaft, and the connecting plate (143) is provided with a second pin hole inside. The fixing rod (144) is rotatably connected with the inner wall of the second pin hole of the connecting plate (143) through the outer surface of the second pin shaft.

8. A circuit breaker with an arc isolation device according to claim 7, characterized in that: The inner wall of the arc groove is slidably connected to a rotating rod (145), a pin hole is provided inside the rotating rod (145), a pin shaft is fixedly connected to the front of the connecting plate (143), and the connecting plate (143) is rotatably connected to the inner wall of the pin hole of the rotating rod (145) through the outer surface of the fixed pin shaft.

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